✅ Free · 🔒 Private · 🚫 No sign-up
Invoice Studio: the complete guide
Cromagnon Invoice Studio is a free invoice generator and simple invoicing app. Make invoices, quotes, receipts, proforma invoices, credit and debit notes, delivery notes, purchase orders, commercial invoices and retainers, with your logo, any currency, taxes, discounts and payment details, and download them as PDF or a picture, or print them.
Set up your business once, save clients and items, track what is paid and overdue, record expenses and see profit and loss. Invoices can be written in 26 languages, and exported as e-invoices (UBL / Peppol and Factur-X / ZUGFeRD) for accounting software.
Everything is kept in your browser with backup and restore; an optional free account adds sync and shareable links. No paid plan, no limit on invoices, no watermark.
- 100% free
- 10 document types
- Any currency and tax
- 26 languages
- E-invoices: UBL and Factur-X
- No watermark
Features
Everything you can do in Invoice Studio
Documents
10 document types
Invoice, quote, receipt, proforma invoice, credit note, debit note, delivery note, purchase order, commercial invoice and retainer.
Turn one document into another
Make an invoice from an accepted quote, a receipt from a paid invoice, or a credit or debit note from an invoice.
Templates and colours
8 templates in any accent colour, on A4, US Letter or US Legal paper.
Amount in words
Print the total in words, as many countries expect on invoices.
Signature
Draw a signature, use a picture of it, or type it.
26 languages
Labels such as Invoice, Due date and Total in the client's language.
Money and tax
Any currency
With the right symbol and decimals, and an optional exchange rate from the European Central Bank.
Taxes for any country
VAT, GST, sales tax and more, added or withheld, on the total or on each line, with prices including or excluding tax.
Withholding tax
Deduct tax withheld by the client and show the net amount due.
Discounts and charges
Per line or on the total, plus shipping and other charges.
Late fees
A fee or interest rate after a number of grace days, printed under your terms.
Shipping and customs
HS codes, country of origin and weights for commercial invoices.
Run your business
Business profile
Name, logo, address, tax numbers and payment details saved once, with several branches if you need them.
Clients and items
Save clients and products or services and add them in one click.
Status tracking
Draft, sent, paid, cancelled, accepted or turned down, with overdue invoices flagged.
Recurring invoices
Repeat an invoice on a schedule until a date you choose.
Client statements
A statement of everything a client has been billed and has paid.
Expenses and receipts
Record expenses by category, with a photo of the receipt read for you.
Dashboard with profit and loss
Income, expenses and profit at a glance.
Export and share
PDF, picture and print
Download a PDF or an image, print, or save several invoices as one PDF.
UBL e-invoice
A structured XML invoice following EN 16931 and Peppol BIS Billing 3.0, for accounting software and e-invoicing networks.
Factur-X / ZUGFeRD
A PDF with the e-invoice data embedded inside it, readable by people and by software.
Share link and client portal
Send a private link your client opens without an account (needs a free account).
CSV export
Your invoices as a spreadsheet for your accountant.
Backup and restore
Download a backup file and restore it on another device or browser.
Tutorials
Step-by-step how-to guides
How to make an invoice online for free
- Enter your business details and logo once.
- Choose New invoice and pick or add the client.
- Add items with quantity and rate; taxes and totals calculate themselves.
- Download the PDF or print it.
How to turn a quote into an invoice
- Open the quote and mark it Accepted.
- Press Make invoice.
- Check the dates and send the invoice.
How to add VAT or GST to an invoice
- Open Taxes, discount and totals.
- Add a tax with its name and rate, for example VAT 20%.
- Choose whether it applies to the total or each line, and whether prices include tax.
💡 Tip: Save the tax once and use it for new invoices automatically.
How to make a credit note
- Open the invoice to correct.
- Press Make a credit note.
- Adjust the lines and amounts being credited, and download it.
How to set up a recurring invoice
- Open an invoice you send every month.
- Turn on Repeat and choose how often and the next date.
- Optionally set an end date.
How to create an e-invoice (UBL or Factur-X)
- Make sure your business and client have addresses and tax numbers.
- Open the invoice and choose E-invoice for a UBL XML file, or Factur-X / ZUGFeRD for a PDF with the data inside.
- Send it through your e-invoicing provider and check it with their validator.
How to record an expense from a receipt
- Open Expenses and add an expense.
- Take or choose a photo of the receipt; the amount and date are read for you.
- Choose a category and save. It appears in your profit and loss.
How to invoice in another currency
- Choose the currency on the invoice.
- Optionally press Get the ECB rate to show the amount in your own currency.
- Download the invoice.
Tips and tricks
Get more out of Invoice Studio
Number invoices consistently
Set a prefix and numbering in Settings so every invoice has a unique, sequential number.
Put payment details on every invoice
Bank details, PayPal, Wise, M-Pesa, UPI or Pix: invoices with clear payment options get paid faster.
Use a due date
Quick due dates such as 14 days or end of month make it clear when payment is expected.
Back up regularly
Your invoices live in this browser. Download a backup now and then, or turn on sync with a free account.
Write in your client's language
Switch the document language so labels and the amount in words match your client.
Keep receipts as you go
Snap receipts when you pay; your profit and loss is ready at the end of the year.
Privacy
Private by design: your files stay on your device
Your business details, clients and invoices are kept in your own browser, not on Cromagnon's servers, unless you choose to turn on sync with a free account.
Share links are created only when you press Share, and only for the document you choose.
You can erase all your invoice data from the browser at any time from Settings.
Comparison
Invoice Studio compared with typical online tools
| Cromagnon Invoice Studio | Typical invoicing apps | |
|---|---|---|
| Price | ✅ Free, no limit | Free for a few invoices, then a subscription |
| Account | ✅ Not needed (optional for sync) | Required |
| Watermark or branding | ✅ Never | Often on free plans |
| Document types | ✅ 10, including credit and debit notes | Often 2–3 on free plans |
| E-invoices (UBL, Factur-X) | ✅ Yes | Usually paid |
| Languages on documents | ✅ 26 | Varies |
| Expenses and profit and loss | ✅ Yes | Usually paid |
Made for everyone
Who uses Invoice Studio?
Freelancers
Professional invoices in any currency, with payment details and late fees.
Small businesses
Clients, items, recurring invoices, statements and profit and loss.
Contractors
Quotes that become invoices, retainers and withholding tax.
Exporters
Commercial invoices with HS codes, origin, weights and currencies.
Shops
Receipts and delivery notes.
Businesses in e-invoicing countries
UBL / Peppol and Factur-X files for accounting software.
Troubleshooting
Common problems and how to fix them
The e-invoice export is refused
Some things can't be expressed in a UBL invoice, such as withholding taxes or two taxes on one line. The message says what to change.
My invoices are gone in another browser
Invoices are saved in the browser where you made them. Restore a backup, or turn on sync with a free account.
The total in words is in the wrong language
Change the document language.
I need my own numbering
Set the prefix and the next number in Settings → Document numbers.
FAQ
Frequently asked questions
Is Invoice Studio free?
Yes. No limit on invoices, no watermark and no paid plan.
Do I need an account?
No. Everything is kept in your browser. A free account adds sync and share links.
Can I add my logo?
Yes. Add your logo, colours and details once and they appear on every document.
Which currencies are supported?
Any currency, with an optional exchange rate from the European Central Bank.
Can it handle VAT, GST and withholding tax?
Yes. Add any taxes, added or withheld, on the total or each line.
Can I make quotes, receipts and credit notes?
Yes, along with proforma invoices, debit notes, delivery notes, purchase orders, commercial invoices and retainers.
Can I export e-invoices?
Yes. UBL (EN 16931 / Peppol BIS 3.0) XML and Factur-X / ZUGFeRD PDF.
Can I make invoices in other languages?
Yes. Document labels are available in 26 languages.
Can I set up recurring invoices?
Yes. Repeat an invoice on a schedule, with an optional end date.
Does it track expenses?
Yes. Record expenses with receipt photos and see profit and loss on the dashboard.
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